Quick answers
- Where does Arthur W. Williams see patients?
- Medicare's clinician data lists 2 practice locations, including Downey, CA and Whittier, CA. Call before your visit to confirm the address.
- What is Arthur W. Williams's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Arthur W. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Arthur W. Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Arthur W. Williams?
- (562) 904-5000, as listed in official Medicare / NPI Registry data.
- What is Arthur W. Williams's NPI number?
- 1679256135. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Arthur W. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 11500 Brookshire AveDowney, CA 90241 (562) 904‑5000
- 12401 Washington BlvdWhittier, CA 90602 (562) 698‑0811
Group practices
Medicare enrollment lists Arthur W. Williams as a member of this group (CMS data updated 2026-10-02).
- Intercommunity Emergency Medical Group67 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Downey
Clinicians with the same Medicare primary specialty in Downey, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679256135 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians